Both hobbyist gardeners and criminals who cultivate marihuana use the same types of high-powered hydroponic equipment in a residential setting, with no monitoring by authorities. The equipment’s power requirements (e.g., 1,000-watt bulbs and transformers) exceed a typical home’s electrical capacity, and therefore require professional installation. However, due to a lack of regulation, this installation is generally undertaken by ammeters and work is most frequently done without the necessary permits or licences.